实时电磁环境监测系统设计与实现

Design and implementation of a real-time electromagnetic environment monitoring system

随着数字技术的发展,瞬态信号对射电天文观测的影响越来越大,围绕瞬态信号测量需求,开展实时电磁环境监测技术研究与工程应用极其必要.首先,本文依托射电天文台址实际测量需求,给出了电磁环境监测系统硬件构架设计方案.其次,依据信号分析仪参数配置与测量时间、测量不确定度的关系,给出了实时电磁环境监测测量时间配置方法;并采用数据压缩、多线程并行处理、环形缓存区设计等技术方法实现高速数据传输,提高了测量系统的可靠性.最后,开发了系统测量软件及基于Web的频谱监视软件,实现电磁环境实时测量与监视,应用于QTT(QiTai Radio Telescope)台址,为台址瞬态信号特征分析与干扰缓解策略的制定提供数据支撑.

With the advancement of digital technology, the influence of transient signals on radio astronomy observation is growing,and it is imperative to conduct real-time electromagnetic environment monitoring technology research and engineeringapplications that require the measurement of transient signals. First, in this paper, the hardware architecture designscheme of the electromagnetic environment monitoring system is presented based on the actual measurement of the radioastronomy station. Second, a real-time electromagnetic environment monitoring measurement time configuration methodis proposed based on the relationship between signal analyzer parameter configuration, measurement time, andmeasurement uncertainty. The technical methods of data compression, multithread parallel processing, and ring bufferdesign are adopted to achieve high-data data transmission, thus improving the reliability of the measurement system.Finally, the system measurement software and web-based spectrum monitoring software are developed to allow real-timeelectromagnetic environment measurement and monitoring. These were applied to QTT (QiTai Radio Telescope) sitesand provided data support for analyzing transient signal characteristics and interference mitigation strategies.